linux-kernel - [PATCH 2/8] workqueue: Factor out init_cpu_worker

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Date: Mon, 29 Jan 2024 23:11:49 -1000
From: Tejun Heo <tj@...nel.org>
To: torvalds@...ux-foundation.org,
	mpatocka@...hat.com
Cc: linux-kernel@...r.kernel.org,
	dm-devel@...ts.linux.dev,
	msnitzer@...hat.com,
	ignat@...udflare.com,
	damien.lemoal@....com,
	bob.liu@...cle.com,
	houtao1@...wei.com,
	peterz@...radead.org,
	mingo@...nel.org,
	netdev@...r.kernel.org,
	allen.lkml@...il.com,
	kernel-team@...a.com,
	Tejun Heo <tj@...nel.org>
Subject: [PATCH 2/8] workqueue: Factor out init_cpu_worker_pool()

Factor out init_cpu_worker_pool() from workqueue_init_early(). This is pure
reorganization in preparation of BH workqueue support.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 kernel/workqueue.c | 32 ++++++++++++++++++--------------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 3f2081bd05a4..f93554e479c4 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -7135,6 +7135,22 @@ static void __init restrict_unbound_cpumask(const char *name, const struct cpuma
 	cpumask_and(wq_unbound_cpumask, wq_unbound_cpumask, mask);
 }
 
+static void __init init_cpu_worker_pool(struct worker_pool *pool, int cpu, int nice)
+{
+	BUG_ON(init_worker_pool(pool));
+	pool->cpu = cpu;
+	cpumask_copy(pool->attrs->cpumask, cpumask_of(cpu));
+	cpumask_copy(pool->attrs->__pod_cpumask, cpumask_of(cpu));
+	pool->attrs->nice = nice;
+	pool->attrs->affn_strict = true;
+	pool->node = cpu_to_node(cpu);
+
+	/* alloc pool ID */
+	mutex_lock(&wq_pool_mutex);
+	BUG_ON(worker_pool_assign_id(pool));
+	mutex_unlock(&wq_pool_mutex);
+}
+
 /**
  * workqueue_init_early - early init for workqueue subsystem
  *
@@ -7195,20 +7211,8 @@ void __init workqueue_init_early(void)
 		struct worker_pool *pool;
 
 		i = 0;
-		for_each_cpu_worker_pool(pool, cpu) {
-			BUG_ON(init_worker_pool(pool));
-			pool->cpu = cpu;
-			cpumask_copy(pool->attrs->cpumask, cpumask_of(cpu));
-			cpumask_copy(pool->attrs->__pod_cpumask, cpumask_of(cpu));
-			pool->attrs->nice = std_nice[i++];
-			pool->attrs->affn_strict = true;
-			pool->node = cpu_to_node(cpu);
-
-			/* alloc pool ID */
-			mutex_lock(&wq_pool_mutex);
-			BUG_ON(worker_pool_assign_id(pool));
-			mutex_unlock(&wq_pool_mutex);
-		}
+		for_each_cpu_worker_pool(pool, cpu)
+			init_cpu_worker_pool(pool, cpu, std_nice[i++]);
 	}
 
 	/* create default unbound and ordered wq attrs */
-- 
2.43.0